(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Children's Library | Biodiversity Heritage Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "Apple Manual: PowerBook G4 12in 1ghz"

• Service Source 




PowerBook G4 (12-inch 1.33 GHz) 

Updated October 25, 2005 



) 2004 Apple Computer, Inc. All rights reserved. 



I Service Source 




Take Apart 



PowerBook G4 (12-inch 1.33 GHz) 



2004 Apple Computer, Inc. All rights reserved. 




General Information 




Overview 

Some of the key features that distinguish this computer from earlier notebook models 
include: 

• Faster processor at 1 .33 GHz 

• Cable guides on frame 

• Latches in battery bay to secure top case 



General Information 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 1 



Model Differences 

The external housing of the PowerBook G4 (12-inch 1 .33 GHz) model looks the same as 
the PowerBook G4 (12-inch DVI) model. Both have a mini-DVI port (shown below). 




> 



^H flMUL 



• • • 



iiinwwa 



The mini-DVI port is used with an adapter cable to connect the computer to a monitor, 
television, VCR, or other video device. The adapter cables that can be used with this port 
include a mini-DVI-to-DVI adapter, a mini-DVI-to-VGA adapter, and a mini-DVI-to-S-Video 
adapter. 

To distinguish the PowerBook G4 (12-inch 1 .33 GHz) model from previous models, check 
the processor speed and note the latches in the battery bay. 

This computer model includes two latches inside the battery bay. These latches help 
secure the top case to the computer. Refer to the Top Case procedure for more 
information. 




2 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



General Information 



Tools 

The following tools are recommended for this computer: 
Coin 

ESD wriststrap and mat 
Small soft cloth 

Black stick (or other nonconductive nylon or plastic flat-blade tool) 
#0 Phillips screwdriver (magnetized) 
#1 Phillips screwdriver (magnetized) 
Jeweler's flat-blade screwdriver 
1 .5 mm hex driver 

4 mm socket wrench or needlenose pliers 

nonconductive tweezers or needlenose pliers (for replacing a foot or for routing thin 
cables such as the AirPort antenna cable) 

Important: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). If doing a complete disassembly, note the 
screws removed from each location in the computer. 

Warning: Check the screw lengths before installing the screws. Installing a longer 
screw in the wrong place can permanently damage the housing or an internal part. 

Serial Number Location 

The serial number is located in the battery bay. 




General Information 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 3 




Battery 



Tools 

This procedure requires the following tools: 

• Soft cloth 

• Coin 

Part Location 




Preliminary Steps 

Warning: Always shut down the computer before opening it to avoid damaging its 
internal components or causing injury. After you shut down the computer, the 
internal components can be very hot. Let the computer cool down for 30 minutes 
before continuing. 



4 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Battery 



Procedure 

Warning: If the computer has been recently operating, allow it to cool down before 
performing this procedure. 

1 . Shut down the computer. 

2. Unplug the power adapter, phone cord, and any other cables connected to the 
computer. 

3. Turn over the computer and place it on a soft cloth. 

4. Use a coin to release the battery lock. 

5. Lift the battery out of the battery bay. 




6. Install the replacement battery, and reassemble and test the computer. 



Battery 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 5 




Feet 



Tools 

This procedure requires the following tools: 

• Foot kit 

• Tweezers or needlenose pliers 

• Soft cloth 



Preliminary Step 

Before you begin, identify the type of foot that needs replacement. Check the bottom case 
of the computer, and compare it with the images in this table: 



Plug Area on Bottom Case 



Matching Foot 



Action 



Missing plug 




Not available for 
replacement 



Do not perform the foot 
replacement. 



Battery plug 



Battery foot 




% 



^ 



Continue with the 
procedure, matching 
the foot to the plug on 
the battery. 



Case plug 




Case foot 



vi 



Continue with the 
procedure, matching 
the foot to the plug on 
the bottom case. 



Case plug 




Case foot 




Continue with the 
procedure, matching 
the foot to the plug on 
the bottom case. 



6 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Feet 



Procedure 

Warning: The glue used in this procedure can bond instantly to skin. Do not touch the 
glue. In the event of contact, review the safety instructions at the end of this document. For 
additional information, refer to the glue manufacturer: 

Elmer's Products, Inc. 
Columbus, OH. 43215-3799 
www.krazyglue.com 

1 . Place the computer upside down on a clean, lint-free cloth or other nonabrasive 
surface. 

2. Select a foot from the kit that matches the plug on the bottom case. (Refer to the 
images shown in the table.) Do not use a foot that does not match. 

3. Make sure the plug area on the bottom case is clean. If any portion of the soft rubber 
foot remains, remove it so that only the hard plastic plug is visible (as shown below). 



Battery Plug 



Case Plug 




Important: Notice the inner ring of the plug. When positioning the foot, make sure 
the textured plane of the rubber foot fits into the compatible ring in the plug. This 
ensures a balanced and level fitting. 




Feet 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 7 



Warning: GLUE IS AN EYE AND SKIN IRRITANT. BONDS SKIN INSTANTLY. Do not 
touch the glue at any time. Before opening the glue, review the safety instructions at 
the end of this document. 

Important: The glue tube included in the kit is sealed until first use. Do not break the 
seal until you are ready to use the glue. To break the seal, hold the tube upright and 
away from you. Place the hollow nozzle cap on the tube and tighten it all the way 
down. The tube is then ready to dispense the glue through the nozzle cap. 



N 





5. Apply one drop of glue to the plug on the bottom case. Do not spread the glue. 

6. Using tweezers or needlenose pliers, carefully position the new foot so its textured 
surface fits into the inner ring of the plug. 

7. Using the end of the tweezers or pliers— not your finger— lightly press and hold the 
foot in place for 30 seconds. 




8. Before turning over the computer, allow the glue to set for at least 1 5 minutes. 

9. Discard the tube of glue. 

SAFETY INSTRUCTIONS: GLUE IS AN EYE AND SKIN IRRITANT. BONDS SKIN 
INSTANTLY. Contains ethyl cyanoacrylate. Avoid contact with skin and eyes. If eye or 
mouth contact occurs, hold eyelid or mouth open and rinse thoroughly but gently with 
water only for 15 minutes and GET MEDICAL ATTENTION. Liquid glue will sting eye 
temporarily. Solidified glue may irritate eye like a grain of sand and should be treated by an 
eye doctor. If skin bonding occurs, soak in acetone-based nail polish remover or warm 
soapy water and carefully peel or roll skin apart (do not pull). Contact through clothing may 
cause skin burn. If spilled on clothing, flush with cold water. Avoid prolonged breathing of 
vapors. Use with adequate ventilation. KEEP OUT OF REACH OF CHILDREN. 



8 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Feet 




Memory Door and Memory Card 



Tools 

This procedure requires the following tools: 

• Soft cloth 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Part Location 




Preliminary Steps 

Before you begin, remove the battery. 

Procedure 

Warning: If the computer has been recently operating, allow it to cool down before 
performing this procedure. 



Memory Door and Memory Card 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 9 



1 . Place the computer upside down on a soft cloth. 

2. Remove the four identical screws from the memory door. 

3. Use a black stick to lift off the memory door. 



2.5mm 



2.5mm 




2.5mm 



2-5ifiifi 




4. Touch a metal surface inside the computer to discharge static electricity from your 
body. 

5. If a memory card is already installed, release it by spreading apart the tabs in the 
expansion slot from the notches in the card. Allow the card to pop up slightly, and pull 
it out of the memory slot. 




10 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Memory Door and Memory Card 



6. Insert the replacement memory card into the expansion slot at a 30-degree angle. 




7. Make sure the memory card is fully inserted. Check that the notches in the card clear 
the tabs as you press down on the sides of the card to lock it into place. 




8. Install the memory door. Be careful not to overtighten the screws. 

9. Install the battery, and test the computer. 



Memory Door and Memory Card 



PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart - 1 1 




AirPort Extreme Card 



Tools 

This procedure requires a black stick (or other nonconductive nylon or plastic flat-blade 
tool). 

Part Location 




Preliminary Steps 

Before you begin, remove the battery. 



12 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



AirPort Extreme Card 



Procedure 

Warning: If the computer has been recently operating, allow it to cool down for 30 
minutes before performing this procedure. 

1 . Touch a metal surface inside the battery bay to discharge static electricity from your 
body. 




2. Open the door to the AirPort slot. 

3. If an optional AirPort Extreme Card is already installed, use a black stick to un-loop the 
pull tab. 




AirPort Extreme Card 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 13 



4. Gently disconnect the AirPort antenna cable. 




5. Use the pull tab to pull out the card. 




14 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



AirPort Extreme Card 



6. Slide the replacement AirPort Extreme Card with the serial number facing up into the 
slot, as shown. 




/ 



AirPort Extreme Card 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 15 



7. Connect the end of the antenna cable to the card. 

8. Loop the clear plastic tab under the card so that the tab secures the antenna cable 
and tucks into the slot. 




Note: The AirPort slot on the bottom case has a recessed inner slot designed for the 
clear plastic tab to tuck into. 



^ • ^ 




9. Close the AirPort door, and reassemble and test the computer. 



16 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



AirPort Extreme Card 




Keyboard 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 







i- i- r- r^T^-j^T^i— i \ v~ r 



^H 



^Uli'-l -* 



' 



l°HU'\-\ 



,— I ■ 



M-1.11 4 



■H.t-1'1 



pes 



■ * 



Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 






Keyboard 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 17 



Procedure 

1 . With the computer upside down on a soft cloth, remove the single screw and small 
EMI shield from the memory card bay. 




Replacement Note: Make sure you replace the screw and EMI shield so that the 
EMI shield is positioned with the finger-like projection pointing up. 




18 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Keyboard 



2. Open the computer, and locate the following keys: 

• F1 

• F2 

• F11 

• F12 




\~ 



~ 



3. Important: Using a black stick, carefully pry up each of the four keys from the left side 
of each key. The keys are easily removed from the left side without damaging the 
keyboard. 




LZ~LZ 



:i 




tab 



I Q i W 



Keyboard 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 19 



4. Use a black stick or flat-blade screwdriver to lift off the two round stickers that are 
located between the two key mechanisms. Reserve the stickers for replacement. 




5. Remove the screw under each of the stickers. 




: © ; j_ 



■i 

3 



Q W 



^"G 7 



) 



r 



^■T%-:«- 1 



> \m 



20 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Keyboard 



6. Lift up the top two corners of the keyboard, and move the keyboard toward the display 
to clear the tabs at the bottom of the keyboard. 




Keyboard 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 21 



7. Flip the keyboard over and lay the keyboard flat on the trackpad. 




8. Peel up the keyboard cable from its adhesive. Using a black stick, pry up the tabs at 
the ends of the connector, and then pull the cable straight up to disconnect it. 




22 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Keyboard 



Install the replacement keyboard. Make sure you 

• Set the tabs at the bottom of the keyboard into the slots in the top case. 

• Press the keyboard into place, and install the screws and round stickers. 

• Install the function keys: 

- Position the key directly over the scissor mechanism. 

- Press the key onto the scissor. 

- Check the operation of the key. 

• Close the display and install the final screw in the memory bay. 




10. Reassemble and test the computer. 



Keyboard 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 23 




Top Case 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

• Hex 1 .5 mm screwdriver 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• Keyboard 



24 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Top Case 



Procedure 

1 . Warning: The screws in the battery bay require holding the screwdriver at an 
angle. Be careful not to strip the screws. 

Note: Avoid scratching the external housing by using care when removing the 
screws. You might want to cover part of the housing with a soft cloth as you remove 
screws. 

With the computer upside down on a soft cloth, remove the three screws from the 
bottom case at the battery bay. 




2. Remove the screws near the display hinge. 



5-5rnm 



if. IPS »fl9^fc 




5 5nnnn 



Top Case 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 25 



Open the display, and with the computer upright, remove the following 14 screws from 
the top case: 

• one Hex, 16.5-mm long screw at upper right corner near power button 

• one Hex, 7-mm long screw at upper left corner near microphone 

• one #0 Phillips, 14.5-mm long screw in keyboard well 

• five #0 Phillips, 4.5-mm long screws in keyboard well 

• six #0 Phillips, 2.5-mm long screws in keyboard well 



&_5mm 






2.5mm Q' 

I I 

2_5mm G j 



©4.5mm ™^ 



■ ■ .-.--. 



I»I14II 



1^! »■!»• 
i! En 4.5mm : ■ 
,*-h, IS^Li ■ !■■■ 



4.5mm 



3.5mm G_L^B 




"ST 




Replacement Note: When replacing the top case screws, install the screws in the 
order shown. 



B.5mm 




: 



2.5mm Q 

4.5mm (~}[S 

p I f 
2.5mm O *. 

e En 5^ 

pr RJ, 4.5mm : 



,17]::::::: " ©" 



2.5mm Gj^W ;;; i£: :: l 



26 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Top Case 



4. Remove two screws from the front right side of the top case. 

Note: The shape of the two 3-mm long screws differs from most of the screws used 
in the computer. The screw has a collar under the screw head. 




Replacement Note: In addition to securing the top case to the bottom case, the two 
3-mm long screws help secure an inner bracket to the battery well. Make sure the 
bracket and two latches are installed in the bottom case before replacing the top 
case. 



^ 



* 




5. Remove two screws from the front left side of the top case. 

Replacement Note: When installing the top case, install these two 5.5-mm long 
screws before installing the 3-mm long screws. 




r,.r«iiim 



5.5mm 



©I 

in 



Top Case 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 27 



6. Place the computer on its side, and loosen but do not remove the half of the top case 
that is closest to the display. 




28 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Top Case 



7. At the battery bay, note the two plastic latches that hold the top case to the bottom 
case. 

8. Use a black stick to release both latches. 





Top Case 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 29 



9. Use a black stick running along the front edge of the top case to loosen— but not 
remove— the top case from the bottom case. 




10. In the keyboard well, pull up the looped end of the trackpad cable to disconnect it. 



\ \ \ ^ ^\^6mk 



30 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Top Case 



1 1 . Raise the top case up slightly from the bottom case until you can access the cables 
that are connected under the top case. 

12. Important: Do not forcefully remove the top case. 

With the cables still connected, carefully move the top case aside to disconnect the 
microphone cable and power cable. 




13. Remove the top case from the computer. 



Top Case 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 31 



14. The top case includes the following: 

• Microphone cable 

• Trackpad and trackpad cable 

• Power button and cable 

• Tape 

• Welded EMI strips 

• Magnet in keyboard well 

• Foam spacers 




32 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Top Case 



15. Before installing a replacement top case, check the cable routing of the 

• Power button cable 

• Microphone cable 

• Trackpad cable 

Make sure the cables are routed correctly and cannot be pinched when installing the 
top case. 




Or *■ 



v- 



i 



* m 
m m 



— ^— — — 




16. Install the replacement top case, and reassemble and test the computer. 



Top Case 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 33 




Hall Effect Sensor Board and 
Cable 



Tools 

This procedure requires the following tools: 

• Phillips #0 screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Part Location 




■ ^m *m— Mm 













=r*? 



Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• Keyboard 

• Top case 



34 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Hall Effect Sensor Board and Cable 



Procedure 

1 . Remove the screw from the hall effect sensor board. 

Warning: When replacing the board, make sure you use the same screw. A longer 
screw could scratch the optical media. 

2. Tilt up the board, and free the cable from the cable routing guides along the lower 
edge of the optical drive. 




nil in it ti 1 1 ii 



3. Lift up the tape, if provided, from the corner of the optical drive. 

4. Disconnect the 3-pin connector from CN4 at the DC-to-DC board. 



2rnrn 




5. Install the replacement board, and reassemble and test the computer. 



Hall Effect Sensor Board and Cable 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 35 



Replacement Note: Make sure the cable is routed correctly in the cable guides 
along the lower edge of the optical drive. 




36 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Hall Effect Sensor Board and Cable 




Hard Drive 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 




f c = - - , 



w 

^ 







SI 

■ 3 

• ■_ B| 

— I _ » 

a l 



-Szp^ 



*J 



L^ 





*Tn 




1 



Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 



Hard Drive 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 37 



• Keyboard 

• Top case 

Procedure 

1 . Disconnect the hard drive flex cable. 




2. Remove two screws from the hard drive bracket. 




38 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Hard Drive 



3. Use the flex cable to lift up the hard drive, bracket, and cable from the computer 
housing. 




4. Turn over the hard drive and remove the two screws from the underside of the drive. 




Hard Drive 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 39 



5. Peel up the flex cable from its double-sided tape. 

6. Use a black stick to pry the flex cable connector up slightly on each side, and then pull 
it straight off the drive. Be careful not to bend any pins. 




7. Remove the two screws and grommets from the opposite side of the drive. 




5mm 



5mm 



8. Replacement Note: When installing the replacement drive, make sure the center 
flange of the hard drive bracket fits over the small post on the computer frame. 




9. Install the replacement hard drive, and reassemble and test the computer. 



40 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Hard Drive 




Modem 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Part Location 




QOSS? 



Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• Keyboard 

• Top case 



Modem 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 41 



Procedure 

1 . Warning: When removing the modem, be careful not to strain the modem cable 
or shield. Do not apply pressure to the modem. Read all of the procedure before 
removing and replacing the modem. 

2. Remove the three identical screws from the modem board and shield. 




a: 



3. Use a black stick to tilt up the modem and disconnect it from the logic board. 




42 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Modem 



4. Tilt up the modem board and shield. 






5. Disconnect the modem cable. 



±y5g 





Modem 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 43 



6. Install the replacement modem, and reassemble and test the computer. 

Replacement Caution: When placing the replacement modem on the logic 
board, be sure to align the board and shield over the modem connector on the 
logic board. Handle the modem by the edges only. When securing the modem to the 
logic board, press only on the rectangular area (highlighted in green in the following 
image) that is directly over the modem connector. 




44 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Modem 




DC-to-DC Board 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver (magnetized preferred) 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

• 4 mm socket wrench or needlenose pliers 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 



■ III ^ 




DC-to-DC Board 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 45 



Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• Keyboard 

• Top case 

• Hard drive 



Procedure 

1 . Disconnect the sleep light cable and the hall effect sensor board cable from the DC-to- 
DC board. 




46 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



DC-to-DC Board 



2. Remove the screws from the DC-to-DC board. 

Note: When removing the 4.5-mm long screw, the magnetic latch might draw the 
screw toward it. The 13.5-mm long screw has a hex head and requires a needlenose 
pliers or socket wrench to remove it. 

Replacement Note: When replacing the DC-to-DC board, install the screws in the 
order shown. 




, 



^-' i' ' fj # 9 5mim 

\ 3 5mm 
3 5mm 





3. Lift off the EMI strip from the battery connector. Be sure to replace it when installing 
the replacement DC-to-DC board. 






V X 




■ 


' s \ 


J^ 


r ^Fl 


p* 


-r"^ 1 """"^ \ 


- '#»■ 


1 r >-~ rrJ ^ 


-A 





DC-to-DC Board 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 47 



Place a black stick just under the top edge of the board. Do not lean the black stick on 
the modem board or optical drive. Disconnect the DC-to-DC board from the logic 
board by prying up the DC-to-DC board and removing it from the computer assembly. 




5. Install the replacement DC-to-DC board, and reassemble and test the computer. 



48 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



DC-to-DC Board 




Heat sink and Fan Assembly 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• #1 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 




Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• Keyboard 

• Top case 



Heatsink and Fan Assembly 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 49 



Procedure 

1 . Warning: The cone of the subwoofer, located below the heatsink and to the right of 
the fan, is a sensitive device. Avoid touching the subwoofer cone as you perform this 
procedure. 

2. If tape covers any of the following screws, peel up the tape. Remove the following 
screws from the heatsink: 

• Three 6-mm long #0 Phillips screws 

• Two 7.5-mm long #1 Phillips screws with springs 

• One 12.5-mm long #0 Phillips screw 

• One 4.5-mm long #0 Phillips screw 



12.5mm f cSJ I 




50 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Heatsink and Fan Assembly 



3. Remove the tape, if provided, that covers the heatsink and secures the cables in 
place. 

4. Near the fan, peel up the tape and remove the following screws: 

• One 3-mm long screw 

• One 12-mm long screw 

Replacement Note: When reapplying tape around the fan, make sure the fan 
blades are not blocked. The image below shows the correct application of tape. 




5. Disconnect the inverter cable that runs along the top of the fan. 

Replacement Note: When reconnecting the inverter cable, make sure it is 
routed in the channel above the fan and behind the cable guide, as shown. 

6. Disconnect the fan cable. 




Heatsink and Fan Assembly 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 51 



7. Holding the heatsink plate, begin to lift up the heatsink assembly, being careful where 
it catches on remaining tape and the chassis. Use a black stick to pry up the middle 
right corner of the heatsink plate. 

Warning: To avoid bending the heatsink, support the heatsink as it is removed. 




8. Note the placement of the thermal pads. Make sure you replace the thermal pads 
whenever the heatsink is removed or replaced. 




52 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Heatsink and Fan Assembly 



9. Note the correct routing of the cables when the heatsink is installed. 




10. Install the replacement heatsink, and reassemble and test the computer. 



Heatsink and Fan Assembly 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 53 




Inner Frame 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• Keyboard 

• Top case 



54 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Inner Frame 



• Hard drive 

• Modem 

• DC-to-DC board 

• Heatsink 

Procedure 

1 . Note the cable routing before disconnecting cables. 

Replacement Note: Reserve any tape for securing cables after the frame 
replacement. 

2. Warning: The subwoofer cone, located below the right corner of the frame, is a 
sensitive device. Avoid touching the cone as you perform this procedure. 

3. Disconnect the connector from the upper right corner of the logic board. 




Inner Frame 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 55 



4. Warning: Be careful not to strain the LVDS cable. 

Near the I/O ports, 

• disconnect the LVDS cable by using the pull-tab on the connector 

• disconnect the 6-pin connector 



"•s 




Replacement Note: When reinstalling the LVDS cable, tuck the pull-tab under the 
frame. 

5. Remove the screw that secures the LVDS cable to the frame. 




56 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Inner Frame 



6. Near the fan, disconnect the two connectors shown 

• four-pin connector 

• two-pin connector 




Replacement Warning: When reassembling the computer, notice the two black 
insulated cables that run along the bottom of the fan. To avoid damaging the 
cables, make sure that the thinner twisted cable is routed on top of the 
thicker fan cable and that both cables are routed between the fan and the 
modem standoff, as shown. 




Inner Frame 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 57 



7. Peel up any remaining tape, and remove the screws from the frame and I/O port 
shield. 




58 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Inner Frame 



8. Remove the 6-mm long screw at the RJ1 1 board. 




9. Disconnect the optical drive flex cable. 

10. Pull up the hall effect sensor cable from a few of the cable routing guides only until it 
clears the frame. 




Inner Frame 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 59 



1 1 . Lift up the frame, being careful where it catches on the optical drive flex cable and 
other cables. 





60 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Inner Frame 



Replacement Note: When installing the replacement frame, note the routing 
of the cables through the frame channels. 




Inner Frame 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 61 



12. Remove the tape that secures the RJ1 1 board and cable to both sides of the frame. 
Transfer the RJ1 1 board and cable to the replacement frame. 




■ L 



II 



II 

In I 




r 



IS 1 ? 

i lJ 




13. Remove the screws that secure the EMI strip to the frame. Transfer the EMI strip to the 
replacement frame. 




I. 



^w 




J _ I K« I 




62 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Inner Frame 



14. Remove the screws from the fan. Transfer the fan to the replacement frame. (Refer to 
"Fan" in this chapter.) 



Replacement Note: Check that the replacement frame includes a thermal pad next 
to the fan, as shown by the blue rectangle in the following image. 




15. Install the replacement frame, and reassemble and test the computer. 



Inner Frame 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 63 




RJ1 1 Modem Board and Cable 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 



I m -A!^ 




tl 

n 




aH ir-p-J 




fV 






Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• Keyboard 

• Top case 



64 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



RJ1 1 Modem Board and Cable 



• Hall effect sensor board and cable 

• Hard drive 

• Modem 

• DC-to-DC board 

• Heatsink with fan 

• Inner Frame 

Procedure 

1 . With the inner frame removed from the computer, remove the tape that secures the 
RJ1 1 board and cable to both sides of the frame. 

Replacement Note: Reapply the tape to the frame. Refer to the RJ1 1 cable routing 
in the images below. 





RJ1 1 Modem Board and Cable 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 65 



2. Remove the EMI shield from the RJ1 1 board. The board includes the attached cable 
and connector. 





V 













3. Secure the replacement RJ1 1 modem board and cable to the frame, and reassemble 
and test the computer. 



66 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



RJ1 1 Modem Board and Cable 




Fan 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• Keyboard 

• Top case 

• Hall effect Sensor Board 

• Hard drive 



Fan 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 67 



• Modem 

• DC-to-DC board 

• Heatsink 

• Inner Frame 

Procedure 

1 . With the inner frame removed from the computer, remove the three identical screws 
that secure the fan to the frame. 

2. Note the routing of the fan cable in the channel of the frame. 
Replacement Note: Route the fan cable as shown. 




3. Secure the replacement fan to the frame, and reassemble and test the computer. 



68 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Fan 




Sleep Light 



Tools 

This procedure requires the following tools: 
• #0 Phillips screwdriver 

Part Location 




A J 



Preliminary Steps 

Before you begin, remove the following: 
Battery 

Memory door and memory card 
Keyboard 
Top case 

Hall effect sensor board and cable 
Hard drive 
Modem 

DC-to-DC board 
Heatsink with fan 
Inner frame (with RJ1 1 board attached) 



Sleep Light 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 69 



Procedure 

1 . Remove the screw from the sleep light board. 

2. Remove the board from the bottom case. 




3. Replacement Note: Make sure the bottom case has the sleep light pipe installed 
before installing the replacement sleep light board. 




4. Install the replacement sleep light board, and reassemble and test the computer. 




70 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Sleep Light 




Logic Board 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• AirPort Extreme Card, if installed 

• Keyboard 

• Top case 



Logic Board 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 71 



• Hall effect sensor board and cable 

• Hard drive 

• Modem 

• DC-to-DC board 

• Heatsink with fan 

• Inner frame (with RJ1 1 board attached) 

Procedure 

1 . Remove the two screws at the lower right edge of the board. 



" ^m 




- 




■"— - 




72 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Logic Board 



2. Holding the edges of the board tilt up the logic board. 




3. While holding the board vertically, disconnect the DC-in connector cable from the 
underside of the logic board. 




Logic Board 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 73 



4. Remove the side EMI shield from the I/O ports. 

Warning: When installing the EMI shield over the logic board ports, make sure that 
the shield fits loosely and the ports are not obstructed. 




Replacement Warning: If the shield is improperly installed, the EMI fingers 
at the mini DVI port can bend under and obstruct the port. Make sure the port 
is not blocked when installing the EMI shield and when installing the top case. 




74 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Logic Board 



5. Install the replacement logic board, and reassemble and test the computer. 

Replacement Note: Before securing the replacement logic board in the bottom case, 
make sure the white plastic wireless guide is fitted against the AirPort Extreme Card 
carrier in the bottom case. (The wireless guide requires no screws to hold it in place.) 




Replacement Note: If you are reinstalling the same logic board, make sure 
you carefully remove the old thermal pad material. Replace the thermal pads 
whenever the heatsink is removed. 




Logic Board 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 75 




DC-In Board 



This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 
Battery 

Memory door and memory card 
AirPort Extreme Card, if installed 
Keyboard 
Top case 

Hall effect sensor board and cable 
Hard drive 
Modem 
DC-to-DC board 



76 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



DC-In Board 



• Heatsink with fan 

• Inner frame (with RJ1 1 board attached) 

• Logic board 

Procedure 

1 . Hold the DC-in board in place as you remove the screw that attaches the board to the 
bottom case. 

Note: The screw might be hidden under the mylar sleeve at the lower corner of the 
board. 




2. Pull the flat cable up from the adhesive on the bottom case. 

3. Pull the board away from the side of the bottom housing. Use a black stick to lift up the 
board, if necessary. 




DC-ln Board 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 77 



4. Remove the round port liner. 




5. Install the replacement DC-in board, and reassemble and test the computer. 



78 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



DC-ln Board 




Optical Drive 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• AirPort Extreme Card, if installed 

• Keyboard 



Optical Drive 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 79 



Top case 

Hall effect sensor board and cable 

Hard drive 

Modem 

DC-to-DC board 

Heatsink with fan 

Inner frame (with RJ1 1 board attached) 

Logic board 



Procedure 

1 . Remove the two screws from the shoulder bracket at the upper right corner of the 
optical drive. 




80 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Optical Drive 



2. Use a black stick to remove the shoulder bracket. 




3. Remove the two screws from the slot load bezel. 

Replacement Note: When installing the replacement optical drive in the bottom 
case, make sure the slot load bezel is flush against the slot in the side of the bottom 
case before installing the screws. Check that the felt at the slot opening is even and 
not mashed. 

Replacement Warning: Make sure you use the same screws to secure the bezel. 
Using the wrong sized screws could permanently damage the drive. 



>s«* 






■■: 






■K 












4.5mm 



•& ] 4.5mm 




Optical Drive 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 81 



4. Tilt up the optical drive and remove it from the computer. 




82 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Optical Drive 



5. Turn over the drive and remove the three screws from the L-shaped EMI bracket on 
the bottom of the drive. 




6. Remove the two screws near the cable from the L-shaped EMI bracket at the bottom 
of the drive. 








5mm vO n 




Optical Drive 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 83 



7. Remove the bottom L-shaped EMI bracket. 




84 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Optical Drive 



8. Remove the screws from the L-shaped EMI bracket on the top of the drive. 




2.5mm 



2.5mm 



9. Lift off the L-shaped EMI bracket from the top of the drive. 




1 0. Disconnect the flex cable. 




Optical Drive 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 85 



1 1 . Install the replacement optical drive, and reassemble and test the computer. 

Note: The optical drive bezel is included with the replacement drive, so do not 
remove it. 



86 - PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart Optical Drive 




How to Remove a Stuck Disc 
from the Slot-Load Drive 



The following instructions explain how to remove a disc that is stuck in the slot-load optical 
drive. 

Important: When a disc becomes stuck in the slot-load optical drive, it makes the drive 
unusable. Make sure you have a replacement drive available. 

Tools 

This procedure requires the following tools: 

• ESD wriststrap and mat 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic tool) 

Preliminary Steps 

Before you begin, remove the optical drive from the computer. If brackets, a cable, and a 
faceplate are attached to the drive, use a screwdriver and black stick to remove them. 

Note: The following image shows a sample drive with brackets, cable, and faceplate 
attached. Your drive might have a different appearance. 




How to Remove a Stuck Disc from the Slot-Load 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 87 



Procedure 

1 . Remove the four identical screws that hold the top cover to the drive. 




2. Slide the top cover approximately 2 mm toward the back of the drive. Lift up the top 
cover to remove it. 




88 ■ PowerBook G4 (12-inch 1 .33 GHz) Take Apart How to Remove a Stuck Disc from the Slot-Load 



3. Check the placement of the disc. It is either clamped to the turntable at the center of 
the disc, or it is wedged under one or more posts at the outer edge of the disc. 

4. Holding the edge of the disc, press on the center clamp or hold the posts steady as 
you remove the disc from the drive. 

Important: Do not touch any key components located near the disc. 




5. Replace the top cover on the drive so that the small hooks on the top cover fit into the 
slots on the bottom cover. Then slide the top cover into place. 




6. Replace the four screws. If applicable, install the brackets, cable, and faceplate back 
on the drive before returning the old drive. 

7. Install the replacement drive, and reassemble and test the computer. 



How to Remove a Stuck Disc from the Slot-Load 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 89 




Bluetooth 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• AirPort Extreme Card, if installed 

• Keyboard 

• Top case 

• Hall effect sensor board and cable 

• Hard drive 



90 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Bluetooth 



• Modem 

• DC-to-DC board 

• Heatsink with fan 

• Inner frame (with RJ1 1 board attached) 

• Logic board 

• Optical drive 

Procedure 

Warning: The subwoofer, located to the left of the Bluetooth board, is a sensitive device. 
Avoid touching the subwoofer as you perform this procedure. 

Warning: To avoid excessive pressure on the Bluetooth board, hold the edge of the board 
in place as you perform this procedure. 

1 . If tape covers part of the board, hold the board in place as you remove the tape. 




Bluetooth 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 91 



2. Use a black stick to disconnect the 4-pin connector from the board. 

3. Holding the Bluetooth cable connector, pull it straight up to disconnect it. 













4. Remove the screw from the Bluetooth board. 



I 
■■■■ ■ »« »■ ■ —m 



nr- 





• vmHi 



) 

n 



5. Remove the Bluetooth board from the bottom case. 

6. Install the replacement Bluetooth, and reassemble and test the computer. 



92 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Bluetooth 




Subwoofer 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 
Battery 

Memory door and memory card 
AirPort Extreme Card, if installed 
Keyboard 
Top case 

Hall effect sensor board and cable 
Hard drive 
Modem 
DC-to-DC board 



Subwoofer 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 93 



• Heatsink with fan 

• Inner frame (with RJ1 1 board attached) 

• Logic board 

• Optical drive 

• Bluetooth 

Procedure 

Warning: The cone of the subwoofer is a sensitive device. Avoid touching the subwoofer 
cone as you perform this procedure. 

Warning: To avoid excessive pressure on the subwoofer, hold the edge of the subwoofer 
in place as you perform this procedure. 

1 . Remove the tape that covers the screw. 

2. Remove the screw from the subwoofer. 




3. Remove the remaining tape from the subwoofer and the loose Bluetooth cable. 















IJJ'H 


11 


r- 




A^^^^^M 




j% 


..... 

















94 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Subwoofer 



4. Note: The back edge of the subwoofer adheres to the rear panel. 

Use a black stick to pry open the adhesive seal at the rear panel. Pivot the subwoofer 
away from the rear panel, and remove the subwoofer from the bottom case. 




jt^tt 




5. Install the replacement subwoofer, and reassemble and test the computer. 



Subwoofer 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 95 




Display Module 



Tools 

This procedure requires the following tools: 

• #0 Phillips screwdriver 

• #1 Phillips screwdriver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

• Tweezers or needlenose pliers (optional; for routing the AirPort antenna cable) 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 



96 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Display Module 



AirPort Extreme Card, if installed 

Keyboard 

Top case 

Hall effect sensor board and cable 

Hard drive 

Modem 

DC-to-DC board 

Heatsink with fan 

Inner frame (with RJ1 1 board attached) 

Logic board 

DC-in board 

Optical drive 

Bluetooth 

Subwoofer 



Procedure 

Important: This procedure shows the subwoofer and inner rear panel attached to the 
display module when it is removed from the bottom case. However, you can remove the 
subwoofer from the bottom case; you do not need to remove the subwoofer and display 
module together. 

1 . With the computer upside down, remove the two screws from the bottom case. 




ej -f- 



5mm 

o 




3 




Display Module 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 97 



2. Remove the two screws near the display hinge. 




' mn 2qW 



5mm 



5mm 



3. From the inside of the bottom case, carefully remove the tape from the AirPort 
antenna cable. 

Warning: Do not tug on the AirPort antenna cable. 




98 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Display Module 



4. Note the routing of the AirPort antenna. Using a black stick, start to thread the AirPort 
antenna cable through the AirPort Extreme Card bay. 




5. Holding the antenna cable near the strain relief, start to pull the antenna cable out 
through the corner of the card bay. 




Display Module 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 99 



6. Support the antenna cable as you direct the antenna plug out of the opening in the 
card bay. 




100 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Display Module 



7. Place the computer with the display face up and open to a 90-degree angle or less. 

8. Tilt the top of the bottom housing forward as you rock the lower edge of the bottom 
housing back. Lift off the bottom housing from the display. 




Display Module 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 101 



Important: The display might get caught on the hooks (shown below) on the 
bottom case. If so, gently twist the bottom case to release it from the display. 
When reinstalling the display, align the slots to the hooks. 




102 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Display Module 



9. Remove the four screws from the display's inner rear panel. Make sure the 
screwdriver does not touch the speakers. 



5mm 



5mm 




*rjs&m 



10. Remove the inner rear panel with attached speakers by routing the cables through the 
slots in the rear panel. 

Replacement Note: When installing the rear panel, hold the routed cables away 
from the path of the screws. 




Display Module 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 103 



Replacement Note: When installing the rear panel, check that the twisted pair of 
speaker cables is completely recessed in the panel and that the tape holds the 
cables in place. 




Replacement Note: Check that the orientation of the cables directed through the 
rear panel openings are as shown below: 





104 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Display Module 



1 1 . Install the replacement display module, and reassemble and test the computer. 




y 



- 



Display Module 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 105 




Bottom Case 



Part Location 




Preliminary Steps 

Before you begin, remove the following: 
Battery 

Memory door and memory card 
AirPort Extreme Card, if installed 
Keyboard 
Top case 

Hall effect sensor board and cable 
Hard drive 
Modem 

DC-to-DC board 
Heatsink with fan 

Inner frame (with RJ1 1 board attached) 
Sleep light board 



106 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Bottom Case 



• Logic board 

• DC-in board 

• Optical drive 

• Bluetooth 

• Subwoofer 

• Display module 

Procedure 

When all preliminary steps are performed, the bottom case is the part that remains. 

Replacement Note: Make sure the inner bracket is firmly attached to the replacement 
bottom case before assembling the computer. 




Bottom Case 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 107 




Display Housing 



Tools 

This procedure requires the following tools: 

• 1 .5 mm hex driver 

• Black stick (or other nonconductive nylon or plastic flat-blade tool) 

• Optional: Credit card (or other thin plastic card) 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• AirPort Extreme Card, if installed 

• Keyboard 

• Top case 

• Hall effect sensor board and cable 



108 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Display Housing 



Hard drive 

Modem 

DC-to-DC board 

Heatsink with fan 

Inner frame (with RJ1 1 board attached) 

Logic board 

DC-in board 

Optical drive 

Display module 



Procedure 

1 . Remove the two 5-mm long hex screws from the front bezel. 




Display Housing 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 109 



Use a black stick or thin plastic credit card around the outer edge of the bezel to 
separate the display housing tabs from the display assembly. 

Warning: To avoid damage to the antenna receptors or inner cables, do not poke the 
black stick or credit card inside the display. Keep the tool at a nearly horizontal plane 
with the display bezel as you loosen the display assembly from the display housing. 




Note: In the image above, the Bluetooth cable appearance differs from the 
production models of this computer. 



1 1 - PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart 



Display Housing 



3. Warning: Handle the display assembly and cables with care. Do not strain or pinch 
the cables. Do not apply pressure to or bend the antenna receptors. 

Gently lift the display assembly off of the display housing. 

With the antenna cables still attached, place the display assembly on the tabletop 
opposite the display housing. 

Important: Keep the display assembly and housing in this open orientation (shown 
below) for the remaining steps. 




■■_ ,-!_ 



Display Housing 



PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart - 1 1 1 



4. Note the routing of the antenna cables. Peel up the tape that holds the cables in place. 

Warning: Handle the antenna receptors and cables with care. Do not strain or pinch 
the cables. Do not apply pressure to or bend the antenna receptors. 

5. Warning: The tabs that hold the antenna cables in place are delicate. Avoid pressure 
on the tabs. 

Using a black stick, release the antenna cables from the inner tabs. 





6. Move up the side of the display housing, releasing the cables from the tabs. 





112- PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart 



Display Housing 



7. Note: The antenna receptors are held in place with glue at each post. Use a black 
stick at the end of each antenna receptor to gently pry it off the post. 








Display Housing 



PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart - 1 1 3 



8. Placing the antenna cables and receptors aside, remove the display housing. 




Replacement Note: When installing the replacement display housing, make sure the 
antenna cables are secure under all of the inner tabs that run along the sides and 
bottom of the display housing. 



•rat 




9. Install the replacement display housing, and reassemble and test the computer. 



114 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Display Housing 




LCD Panel 



Tools 

This procedure requires the following tools: 

• Phillips #0 screwdriver 

• Black stick or other nonconductive plastic or nylon tool 

Part Location 




L 



LTiLEIE^UI 



w»» LIMITING!! « 

tKHIIFII 00* 




■ , "J. , *W*!!E™ 



Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• AirPort Extreme Card, if installed 

• Keyboard 

• Top case 

• Hall effect sensor board and cable 

• Hard drive 



LCD Panel 



PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart - 1 1 5 



Modem 

DC-to-DC board 

Heatsink with fan 

Inner frame (with RJ1 1 board attached) 

Logic board 

DC-in board 

Optical drive 

Display module 

Display housing 



Procedure 

Note: Reuse the tape you remove from the LCD panel. 

1 . Hold the backing for the LCD panel in place as you peel off the tape and disconnect 
the LCD cable. 



*■ =kIA - ' TTr ' 


IWWflip^Hl 


¥& 


■ ■ ■ ■ ■ 




1A1 hi IWp 



ppr^w 




1 1 6 - PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart 



LCD Panel 



2. Remove the two screws from each side of the LCD panel. 




3mm 



3mm 




3. Raise up the LCD panel and disconnect the connector to the inverter board. 



LCD Panel 



PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart - 1 1 7 




4. Install the replacement LCD panel, and reassemble and test the computer. 

Replacement Note: When installing the replacement LCD panel in the display bezel 
assembly, make sure the cable is connected to the inverter board and routed as 
shown. 




118 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



LCD Panel 




Inverter Board (and Antenna 
Cable Assembly) 



Tools 

This procedure requires the following tools: 

• Phillips #0 screwdriver 

• Black stick or other nonconductive plastic or nylon tool 

Note: To organize the screws you remove from the computer, use a tray with divided 
compartments (such as a plastic ice cube tray). 

Part Location 




Preliminary Steps 

Before you begin, remove the following: 

• Battery 

• Memory door and memory card 

• AirPort Extreme Card, if installed 

• Keyboard 

• Top case 

• Hall effect sensor board and cable 



Inverter Board (and Antenna Cable Assembly) 



PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart - 1 1 9 



Hard drive 

Modem 

DC-to-DC board 

Heatsink with fan 

Inner frame (with RJ1 1 board attached) 

Logic board 

DC-in board 

Optical drive 

Display module 

Display housing 

LCD panel 



Procedure 

1 . Remove the single screw near the center of the inverter board. 




120 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Inverter Board (and Antenna Cable Assembly) 



2. Lift up the board. 




9SS 



3. Peel away the tape and mylar cover that holds the inverter board and the antenna 
cable assembly together. 



\ 



\ 



\ 



Vfe 




Inverter Board (and Antenna Cable Assembly) PowerBook G4 (1 2-inch 1 .33 GHz) Take Apart - 121 



4. Separate the antenna cable assembly (board with attached antenna cables and 
Bluetooth cable) from the inverter board. 

5. Remove the screws from the clutch cover. 




6. Remove the five screws from the bottom edge of the display bezel 



i^ ""' "^^ 6mm 




122 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart Inverter Board (and Antenna Cable Assembly) 



7. Separate the clutch cover from the bezel and remove the LVDS cable. 




4 

4 



8. Remove the antenna cables and inverter from the clutch cover. 




Inverter Board (and Antenna Cable Assembly) PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 123 



Replacement Note: When reinstalling the clutch cover, check that the cables are 
routed as shown below (Bluetooth cable on the bottom of the clutch): 




124 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart Inverter Board (and Antenna Cable Assembly) 




Hinges with Bezel Brace 



Part Location 




Preliminary Steps 

Before you begin, remove the following: 
Battery 

Memory door and memory card 
AirPort Extreme Card, if installed 
Keyboard 
Top case 

Hall effect sensor board and cable 
Hard drive 
Modem 

DC-to-DC board 
Heatsink with fan 

Inner frame (with RJ1 1 board attached) 
Logic board 
DC-in board 
Optical drive 
Display module 
Display housing 
LCD panel 
Inverter (and antenna cable assembly) 



Hinges with Bezel Brace 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 125 



Procedure 

Important: In the following steps, note that because of the position of the bezel, the 
designation of right and left differs. For example, the right hinge with bezel brace is 
removed from the left side of the bezel because you are viewing the bezel from its inner 
side. Likewise, the left hinge with bezel brace is removed from the right side of the bezel. 

1 . From the left side of the bezel, remove the three screws. 



3.5mm 



3.5mm 



3.5mm 





2. Remove the right hinge with bezel brace from the left side of the bezel. 




126 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Hinges with Bezel Brace 



Replacement Note: If you are replacing the right hinge with bezel brace with a new 
one, make sure you transfer the sleep magnet to the replacement right bezel brace. 
Use a black stick to tilt the magnet out of the magnet holder on the right bezel brace. 




Important: Make sure the magnet is in place before reassembling the display 
module. 



Hinges with Bezel Brace 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 127 



4. From the right side of the bezel, slide out the left hinge with bezel brace (no screws on 
this side). 




Replacement Note: To distinguish the right hinge with bezel brace from the left 
hinge with bezel brace, note that the right hinge has three flanges on the outer edge 
for the three screws. 



K -- 






128 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Hinges with Bezel Brace 



Identifying the Replacement Hinges 

Before ordering a replacement hinge with bezel brace, verify the LCD panel manufacturer 
and hinge marking, as follows. 

1 . Check the manufacturer label shown on the LCD panel. 




Hinges with Bezel Brace 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 129 



2. If the label on the LCD panel shows Samsung as the manufacturer, order replacement 
hinges that show a SAM-L or SAM-R designation on the outer arm of the bezel brace. 

• To replace a SAM-L hinge, order 922-5714. 

• To replace a SAM-R hinge, order 922-5713 




130 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Hinges with Bezel Brace 



3. If the label on the LCD panel shows IDTech as the manufacturer, order replacement 
hinges that show an LG-L or LG-R designation on the outer arm of the bezel brace. 

• To replace a LG-L hinge, order 922-5712. 

• To replace a LG-R hinge, order 922-571 1 





Hinges with Bezel Brace 



PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 131 




Display Bezel 



Part Location 



_:. - 



— 




""■31 ^T 



■>— 






Preliminary Steps 

Before you begin, remove the following: 
Battery 

Memory door and memory card 
AirPort Extreme Card, if installed 
Keyboard 
Top case 

Hall effect sensor board and cable 
Hard drive 
Modem 

DC-to-DC board 
Heatsink with fan 

Inner frame (with RJ1 1 board attached) 
Logic board 
DC-in board 
Optical drive 



132 - PowerBook G4 (12-inch 1 .33 GHz) Take Apart 



Display Bezel 



• Display module 

• Display housing 

• LCD panel 

• Inverter (and antenna cable assembly) 

Procedure 

When all preliminary steps are performed, the display bezel is the part that remains. 



Display Bezel PowerBook G4 (12-inch 1 .33 GHz) Take Apart - 133 



I Service Source 




Troubleshooting 



PowerBook G4 (12-inch 1.33 GHz) 



© 2004 Apple Computer, Inc. All rights reserved. 




Symptom Charts 



How to Use the Symptom Charts 

The Symptom Charts included in this chapter will help you diagnose specific symptoms 
related to the product. 

The steps to solve a symptom are listed sequentially. You might not need to perform every 
step before the symptom is solved. Start with the first step, and then test for the symptom. 
If the symptom persists, replace any modules you removed, go to the next step, and test 
again. Continue down the list until the symptom is solved. 

Important: This computer starts up only in Mac OS X. Mac OS 9 is not available as a 
startup disk and previous versions of the Mac OS should not be installed on this computer. 

AirPort Extreme Card 

AirPort Extreme Card not recognized 

1 . Use Software Update in Mac OS X system preferences or see the Apple Software 
Updates web page to make sure the latest version of AirPort software is installed. 

2. Reseat AirPort Extreme Card and make sure AirPort antenna cable is fully connected. 

3. Verify settings in Network Preferences pane. 

4. Check that AirPort Extreme Card appears in Apple System Profiler under Network 
overview in System Profile. 

5. Replace with known-good AirPort Card. 

6. Replace logic board. 

AirPort communication erratic 

1 . Use Software Update in Mac OS X system preferences or see the Apple Software 
Updates web page to make sure the latest version of AirPort software is installed. 

2. Make sure the computer is within antenna range of the other computer or the 
network's access point. 

Note: Nearby electronic devices or metal structures can interfere with wireless 
communication and reduce the antenna range. Repositioning or rotating the 
computer may improve reception. 

Symptom Charts PowerBook G4 (12-inch 1 .33 GHz) Troubleshooting 



3. Check the signal strength shown in the AirPort status icon in the menu bar. Up to four 
bars can appear. 

4. If the symptom remains, refer to the Knowledge Base for the latest articles on 
computer placement and how to optimize AirPort performance. 

Poor AirPort reception 

1 . Refer to Knowledge Base article 88258: PowerBook G4: How to Optimize AirPort 
reception. 

2. Reseat AirPort antenna and cable. 

3. Check AirPort antenna cable for damage. 

4. Replace with known-good AirPort Extreme Card. 

5. Replace AirPort antenna board and cable. 

Battery 

Battery won't charge 

1 . Make sure that power adapter connector is fully inserted. 

2. Remove any connected peripherals. 

3. Try known-good power outlet. Green or amber light should glow at power adapter 
connector. 

4. Try known-good power adapter and power cord. 

Note: Verify that power adapter connector glows amber or green. If the power 
adapter light is green, turn over the computer and press the battery button. One to 
five lights glow to show the battery's level of charge. One blinking light indicates that 
the battery does not have sufficient charge to turn on. 

5. Remove battery and reseat it. 

6. Try known-good battery. 

7. Reset the power manager by pressing the key combination Control-Option-Shift- 
power. 

Warning: Make sure you do not hold down the "fn" key when resetting the 
power manager. 

Warning: Resetting the power manager means you will also need to reset the 
date and time (using the Date &Time control panel). 

8. Update to Mac OS 1 0.2.4 or later, or boot from external device with 1 0.2.4. 

9. Replace DC-to-DC board. 

10. Replace logic board. 

2 - PowerBook G4 (1 2-inch 1 .33 GHz) Troubleshoot- Symptom Charts 



Short battery life 

Refer to Knowledge Base article 1 14154: SOP: Battery Screening Process-Worldwide. 

Battery won't charge completely 

1 . If battery reaches 96 percent and doesn't charge further, this is normal operation. 
Refer to Knowledge Base article 88344: PowerBook G4, iBook: Battery Does Not 
Show Full Charge in Mac OS X. 

2. If battery charges to 95 percent or less and stops charging before reaching 1 00 
percent, replace DC-to-DC board. 

Error Beeps 

The computer automatically performs a power-on self test when it is turned on after being 
fully shut down (not a restart). This section describes what to do if beeps are heard during 
the startup. 

Note: The computer has a memory expansion slot that accepts a 1 .25-inch (or shorter) 
PC-2100 compliant, SO-DIMM memory card. Refer to the Memory Replacement 
instructions for removal and installation. 

Computer beeps once at startup 

1 . One beep means that no RAM is detected. 

2. If a RAM card is installed in the expansion slot, remove it and put in known-good and 
compatible RAM and restart. 

• If symptom does NOT repeat, replace RAM card. 

• If symptom repeats, replace logic board. 

3. If no RAM card is installed, replace logic board. 

Computer beeps three times at startup 

1 . Three beeps means that no RAM banks passed memory testing. 

2. If a RAM card is installed in the expansion slot, remove it and put in known-good and 
compatible RAM and restart. 

• If symptom does NOT repeat, replace RAM card. 

• If symptom repeats, replace logic board. 

3. If no RAM card is installed, replace logic board. 



Symptom Charts PowerBook G4 (12-inch 1 .33 GHz) Troubleshooting 



Computer beeps four times at startup 

1 . Four beeps indicates a bad checksum for the remainder of the boot ROM. The ROM 
(which is located on the logic board) is bad. 

2. If a RAM card is installed in the expansion slot, remove it and put in known-good and 
compatible RAM and restart. 

• If symptom does NOT repeat, replace RAM card. 

• If symptom repeats, replace logic board. 

3. If no RAM card is installed, replace logic board. 

Related article: 

58442: Power On Self-Test Beep Definition - Part 2 

Hard Drive 

Hard drive will not initialize 

1 . Boot from Software and Restore DVD. Under the File menu, select Disk Utility, and 
see if the hard drive appears on the list. 

2. If no hard drive is found in Disk Utility, verify the hard drive cable connections. 

3. Replace hard drive cable. 

4. Replace hard drive. 

Important: If the computer is under warranty and data recovery is required, refer to 
Article 31077: Hard Drive Data Recovery & Warranty Implications, for important 
information. 

5. Replace logic board. 

The internal hard drive does not spin 

1 . Disconnect any connected peripherals. 

2. Try known-good power outlet. 

3. Try known-good power adapter and power cord. 

4. Boot from Software and Restore DVD. 

5. Verify Disk Utility does not recognize the hard drive. 

6. Verify cable connections. 

7. Reset the power manager by pressing the key combination Control-Option-Shift- 
power. 

Warning: Make sure you do not hold down the "fn" key when resetting the 
power manager. 



4 - PowerBook G4 (1 2-inch 1 .33 GHz) Troubleshoot- Symptom Charts 



Warning: Resetting the power manager means you will also need to reset the 
date and time (using the Date &Time control panel). 

8. Replace hard drive cable. 

9. Replace hard drive. 

Noisy hard drive 

Some sounds such as ticking or a rotational noise are normal. Refer to Knowledge Base 
article 30593: PowerBook: Hard Drives and Noise. 

Keyboard 

No response from any key on keyboard 

1 . Remove any connected peripherals. 

2. Boot from Software and Restore DVD to verify that it is not a software problem. 

3. Turn off the computer. Disconnect the keyboard connector and inspect connectors. 

4. Replace keyboard. 

5. Replace logic board. 

Keycap pops off 

1 . If the keycap is not broken, it can probably be reinstalled. To replace the keycap, refer 
to Knowledge Base article 88106: PowerBook G4: Keycap Replacement. 

2. Replace keyboard. 

Modem 

No modem dial tone 

1 . Check that the correct modem is selected in the Network Preferences pane. In 
Modem tab, check that sound is not turned off. 

2. It is possible that the modem is connecting but not generating a sound. Check Internet 
Connect to verify status. 

3. Verify known-good analog (not digital) telephone line. 

4. Verify known-good RJ1 1 telephone cable. 

5. Verify RJ1 1 cable is not plugged into Ethernet port. 

6. Inspect RJ1 1 connector and modem port for pin damage. 

7. Verify RJ1 1 telephone cable is firmly installed in the modem port. 

8. To verify system function, in Modem tab, deselect "Wait for Dial Tone Before Dialing." 

Symptom Charts PowerBook G4 (12-inch 1 .33 GHz) Troubleshooting 



9. Verify modem 2-pin connector is plugged into modem correctly. 

10. Replace the RJ1 1 modem cable and port. 

11. Replace modem. 

Related article: 

106592: Mac OS X: How to Use Modem AT Commands 

Cannot send fax 

1 . Check that Network connection in System Preferences is set to Internal Modem. 

2. Refer to Knowledge Base article 25746: Mac OS X 10.3: Fax doesn't send. 

Cannot receive fax 

Check that "Receive faxes on this computer" is selected in the Print & Fax area of System 
Preferences. 

Related articles: 

25731 : Mac OS X 10.3: Receiving faxes and connecting to the Internet 
25596: Mac OS X 10.3: About Receiving Faxes. 

Modem drops connection 

1 . Try known-good phone line. 

2. Refer to Knowledge Base article 1 06748: Mac OS X: Troubleshooting a dial-up/PPP 
Internet connection. 

Optical Drive 

The optical drive does not accept CD or DVD disc (mechanical failure) 

1 . Verify disc is not warped. 

2. Verify disc is correct size. The computer will accept only 120 mm round disc. Refer to 
article 58641 : Macintosh: Using Nonstandard Discs in CD-ROM or DVD-ROM Drives. 

3. Replace optical drive. 

The disc icon does not show up on the desktop, or a dialog box appears to 
initialize disc 

1 . Verify the correct type of disc is being used. 

2. Try cleaning the disc. It may not mount if dirty or scratched. 

3. Try a different disc. 



6 - PowerBook G4 (1 2-inch 1 .33 GHz) Troubleshoot- Symptom Charts 



4. Create new Mac OS X user and log in as that user. (So that the customer does not 
question the new user, remove the user once disc is verified.) 

5. Reseat optical drive cable. 

6. Replace optical drive cable. 

7. Replace optical drive. 

The optical drive does not eject CD or DVD disc 

1 . Verify disc is not in use by quitting any applications that may be using the disc. 

2. Press and hold Media Eject key at top right corner of keyboard. If that does not work, 
hold down Function (fn) key and Media Eject key. 

3. Drag disc icon to trash or select it and press Command-E. 

4. Choose Restart from Apple menu while holding down trackpad button. 

5. Refer to Take Apart to remove the stuck disc and replace the optical drive. 
Related article: 

106752: Macintosh: How to Eject a Disc When Other Options Do Not Work 

Ports 

Fire Wire or USB port not recognizing devices; or device not recognized by 
computer 

Note: If you are trying to use a serial device with a USB/Serial adapter, check with the 
manufacturer of the adapter for compatibility. 

1 . Completely shut down, then press the power button to start the computer. 

2. Use Software Update in Mac OS X system preferences to verify that the latest 
software is installed. 

3. Use Apple System Profiler to verify that the computer is recognizing the device. 

4. For USB, test ports with a known-good Apple keyboard or mouse. Try different USB 
device on same port. 

5. For FireWire, test by connecting another computer in FireWire Target Disk Mode. 
Refer to article 58583: How to Use FireWire Target Disk Mode. 

6. If a camera, turn on the camera before opening the video application. 

7. Verify current driver for the device is installed. Verify that drivers are installed properly 
for third party, if needed. 

8. Create new Mac OS X user and log in as that user. (So that the customer does not 
question the new user, remove the user once disc is verified.) 

9. Try other port if available. 

Symptom Charts PowerBook G4 (12-inch 1 .33 GHz) Troubleshooting 



10. Try a different cable. (Cable noise could be a problem.) 

11. Try known-good device. 

12. Eliminate chain by plugging in only one peripheral. 

13. If self powered make sure that the power supply is connected and device's LED 
indicates that it is getting power. 

14. Reset the power manager by pressing key combination Control-Option-Shift-power. 
Warning: Make sure you do not hold down the "fn" key when resetting the 
power manager. 

Warning: Resetting the power manager means you will also need to reset the 
date and time (using the Date &Time control panel). 

15. Replace logic board. 

Sound 

Distorted sound from speakers 

1 . Verify sound is correct with external speakers/headphones. If sound is correct, replace 
top case. 

2. Verify speaker cables are inserted correctly, and check cables for damage. 

3. Check balance in System Preferences: Sound: Output. 

4. Replace rear panel assembly with attached speakers. 

5. Replace subwoofer. 

6. Replace logic board. 

No sound from speaker(s) 

1 . Use the Software Update preference pane to verify that the latest software updates 
have been installed. 

2. Press the F3 key to verify that mute mode is not enabled. 

3. Press the F4 or F5 key to check the volume setting. 

4. Verify no external speakers or headphones are plugged in. 

5. In the Sound preference pane confirm that only one device is listed in the Output tab. 

6. Shut down computer and restart. 

7. Reset PRAM (Press the power button, then hold down the Option-Command-P-R 
keys until you hear the startup chime at least one additional time after the initial 
startup chime). 

8. Verify that the speaker cable is connected properly to logic board. 



8 - PowerBook G4 (1 2-inch 1 .33 GHz) Troubleshoot- Symptom Charts 



9. Replace top case. 

10. Replace logic board. 

Startup 

The computer will not power on 

1 . Make sure that power adapter connector is fully inserted. 

2. Remove any connected peripherals. 

3. Try known-good power outlet. 

4. Try known-good power adapter and power cord. 

5. Remove battery. 

6. Press Caps Lock key to see if light on key comes on. If it does, hold power button 
down for six seconds to shut down the computer and restart. 

7. Reset the power manager by pressing the key combination Control-Option-Shift- 
power. 

Warning: Make sure you do not hold down the "fn" key when resetting the 
power manager. 

Warning: Resetting the power manager means you will also need to reset the 
date and time (using the Date &Time control panel). 

8. Reset PRAM (Press the power button, then hold down the Option-Command-P-R 
keys until you hear the startup chime at least one additional time after the initial 
startup chime). 

9. Remove any additional RAM 

10. Remove AirPort Card. 

11. Try known-good DC board. 

12. Verify cable connections and check cables for damage. 

13. Verify power button is connected properly to logic board, if power button is not 
functioning correctly or damaged, replace the top case. 

14. Replace logic board. 

The computer freezes during startup or a flashing question mark appears 

1 . If using Classic in Mac OS X, check for incompatible extensions: 

• Turn off system extensions in Classic by opening System Preferences, clicking 
Classic, clicking the Advanced tab, and choosing Turn Off Extensions. Click 
Restart Classic. 

• If turning off extensions appears to solve the problem, identify and eliminate or 



Symptom Charts PowerBook G4 (12-inch 1 .33 GHz) Troubleshooting 



reinstall the extension that is causing the problem. Open the Extensions Manager 
control panel, and turn off the extensions that you suspect are causing the 
problem. Restart Classic with the extensions turned on again. 

2. From the Software Install and Restore disc, use Disc Utility. 

3. Reinstall the computer's system software. 

Display 

No display, or dim display, but computer appears to operate correctly 

1 . Press F2 to increase the screen brightness setting. 

2. Remove any connected devices. Allow the battery to charge to at least 1 percent 
before plugging in external devices. 

3. Try known-good power outlet, power adapter and power cord. 

4. Reboot the computer— hold down the Control and Command keys and press the 
Power button, or press and hold the Power button for 5 to 1 seconds to shut down the 
computer, then press the Power button to restart. 

5. Reset the power manager by pressing the key combination Control-Option-Shift- 
power. 

Warning: Make sure you do not hold down the "fn" key when resetting the 
power manager. 

Warning: Resetting the power manager means you will also need to reset the 
date and time (using the Date &Time control panel). 

6. Reset PRAM (Press the power button, then hold down the Option-Command-P-R 
keys until you hear the startup chime at least one additional time after the initial 
startup chime). 

7. Connect an external display, and check for video on external display. 

• If video is fine on external display, replace LCD panel. 

• If video symptom is same on external display, replace logic board. 

8. Verify backlight cable and LVDS cable connections are seated properly and that the 
cables are not damaged (refer to display assembly replacement instructions). 

9. Replace display assembly. 

10. Verify cable connections and check cables around the hinges for damage. 

1 1 . Replace logic board. 



1 ■ PowerBook G4 (1 2-inch 1 .33 GHz) Trouble- Symptom Charts 



When displaying a single color over the screen area, the LCD panel shows one 
or more pixels that are not properly lit 

Active-matrix LCD technology uses rows and columns of addressable locations (pixels) 
that render text and images on screen. Each pixel location has three separate subpixels 
(red, green, and blue) that allow the image to be rendered in full color. Each subpixel has a 
corresponding transistor responsible for turning the subpixel on or off. 

There are typically millions of these subpixels on an LCD display. For example, the LCD 
panel used in the Apple Cinema HD display is made up of 2.3 million pixels and 6.9 million 
red, green, and blue subpixels. Occasionally, a transistor does not work perfectly, which 
may result in the affected subpixel being turned on (bright) or turned off (dark). With the 
millions of subpixels on a display, it is quite possible to have a low number of faulty 
transistors on an LCD. Therefore, a certain number of subpixel anomalies is considered 
acceptable. Rejecting all but perfect LCD panels would significantly increase the retail 
price for products using LCD displays. These factors apply to all manufacturers using LCD 
technology— not just Apple products. 

To determine whether or not the display has an acceptable number of pixel anomalies, 
follow the steps below: 

1 . Set the display image to one of the following colors: all-white display, all-red display, 
all-green display, or all-blue display. 

2. Using a jeweler's loupe, pocket microscope, or other magnifying device, identify and 
count each subpixel anomaly: 

• Bright subpixel anomaly = subpixel that is always on 

• Dark subpixel anomaly = subpixel that is always off 

3. Important: Check the number of subpixel anomalies with the following chart: 



LCD Size 
(inches) 


Acceptable Number of Subpixel 
Anomalies 


Replace the LCD Panel 


Bright 


Dark 


Combination 


Bright 


Dark 


Combination 


12.1 to 15.2 


up to 3 


up to 5 


up to 7 


4 or more 


6 or more 


8 or more 



4. If the number of subpixel anomalies exceeds the acceptable number listed in the 
chart, replace the LCD panel. 

5. If the number of subpixel anomalies is acceptable, explain to the customer that the 
pixel anomalies are within specifications, and no repair is necessary. 

Important: Do not release the specifications to customers. Instead, inform them that 
a certain number of subpixel anomalies is considered acceptable, and these factors 
apply to all manufacturers using LCD technology— not just Apple products. 



Symptom Charts 



PowerBook G4 (12-inch 1 .33 GHz) Troubleshooting 



Video (S-Video and Composite adapter) 

No video on an external device 

1 . Make sure you are using the S-Video and Composite adapter cable. 

2. Verify TV or VCR is set up properly with correct source. 

3. Try different TV or VCR. Check owner's manual for TV or VCR. 

4. Replace adapter cable. 

5. Replace logic board. 

The display is rolling (PAL instead of NTSC) 

1 . Make sure you are not using Apple's A/V Video Cable. 

2. Make sure you are using the S-Video and Composite adapter cable. 

3. Go to Displays preference pane; change resolution from PAL setting to NTSC setting. 

4. Try a different TV or VCR. 

5. Try a different adapter cable 

6. Replace logic board. 

Display shows ghosting (signal reflection) 

1 . Verify that cables are correctly installed and firmly seated. 

2. Replace video adapter. 

Video (RGB adapter) 

No video on an external device 

1 . Make sure RGB adapter cable is fully seated. 

2. Click "Detect Displays" button to verify that monitor is being recognized in the Displays 
preference pane, and is known-good and supported by this computer. 

3. Try known-good RGB adapter. 

4. Replace logic board. 

5. Replace RGB adapter cable. 

6. Replace logic board. 

Display shows ghosting (signal reflection) 

1 . Verify that cables are correctly installed and firmly seated. 

2. Replace video adapter. 

1 2 - PowerBook G4 (1 2-inch 1 .33 GHz) Trouble- Symptom Charts 



Bluetooth 

Bluetooth not recognized when ADC monitor connected 

1 . Disconnect all devices except the monitor. 

2. Restart the computer. 

3. If Bluetooth is still not recognized, refer to Bluetooth topic articles in the Knowledge 
Base for the latest information on optimizing Bluetooth performance. 

Misc. Symptoms 

The computer runs with battery, but not with the power adapter plugged into 
wall outlet 

1 . Try known-good power outlet. 

2. Try known-good power adapter and power cord. 

Note: Verify that power adapter connector glows amber or green. If the power 
adapter light is green, turn over the computer and press the battery button. One to 
five lights glow to show the battery's level of charge. One blinking light indicates that 
the battery does not have sufficient charge to turn on. 

3. Reset the power manager by pressing the key combination Control-Option-Shift- 
power. 

Warning: Make sure you do not hold down the "fn" key when resetting the 
power manager. 

Warning: Resetting the power manager means you will also need to reset the 
date and time (using the Date &Time control panel). 

4. Replace DC-in board 

5. Replace DC-to-DC board. 

6. Replace logic board. 

The computer runs when plugged into a wall outlet but not on battery power 

1 . Reseat battery to verify battery is seated correctly with battery lock engaged. 

2. Try known-good charged battery. 

3. Reset the power manager by pressing the key combination Control-Option-Shift- 
power. 

Warning: Make sure you do not hold down the "fn" key when resetting the 
power manager. 

Warning: Resetting the power manager means you will also need to reset the 



Symptom Charts PowerBook G4 (12-inch 1 .33 GHz) Troubleshooting 



date and time (using the Date &Time control panel). 

4. Replace DC-to-DC board. 

5. Replace logic board. 

The cursor does not move when you are using trackpad 

1 . Verify that no USB device is connected. 

2. Boot from a Mac OS system CD to verify that it is not a software problem. 

3. Reset the power manager by pressing the key combination Control-Option-Shift- 
power. 

Warning: Make sure you do not hold down the "fn" key when resetting the 
power manager. 

Warning: Resetting the power manager means you will also need to reset the 
date and time (using the Date &Time control panel). 

4. Check trackpad cable and connection to the logic board (see separate Keyboard and 
Top Case replacement instructions for location under top case). 

5. Replace top case. 

6. Replace logic board. 

The cursor intermittently does not move or moves erratically 

Note: User must touch with the surface of only one finger at a time and point directly down 
on the trackpad surface. 

1 . Clean trackpad surface (with computer off, using a non-static-inducing material). 

2. Completely shut down, then press the power button to start the computer. 

3. Reset the power manager by pressing the key combination Control-Option-Shift- 
power. 

Warning: Make sure you do not hold down the "fn" key when resetting the 
power manager. 

Warning: Resetting the power manager means you will also need to reset the 
date and time (using the Date &Time control panel). 

4. Reset PRAM (Press the power button, then hold down the Option-Command-P-R 
keys until you hear the startup chime at least one additional time after the initial 
startup chime). 

5. Remove and reseat memory card. 

6. Try unit on battery power. If problem goes away, replace power adapter. 

7. Place a Mac OS system CD in the optical disc drive, press the start button and hold 
down the "C" key. Check the cursor movement, to see if the problem is software. 

14 - PowerBook G4 (12-inch 1 .33 GHz) Trouble- Symptom Charts 



8. Check trackpad cable and connection to the logic board (see separate Keyboard and 
Top Case replacement instructions for location under top case). 

9. Replace top case. 

10. Reseat the heatsink if it is not properly secured. 

1 1 . Replace logic board. 

The microphone is not working 

1 . In the Sound preference pane select the Input tab. Make sure that the internal 
microphone device is selected in the list. 

2. In the Sound preference pane select the Input tab. Make sure that the input volume is 
midrange or above. 

3. In the Sound preference pane select the Output tab. Make sure the built-in audio 
controller is selected. 

4. Create new Mac OS X user and log in as that user. (So that the customer does not 
question the new user, remove the user once disc is verified.) 

5. Reset PRAM (Press the power button, then hold down the Option-Command-P-R 
keys until you hear the startup chime at least one additional time after the initial 
startup chime). 

6. Verify microphone cable connection to logic board. 

7. Replace top case (which includes the microphone). 

8. Replace logic board. 

The latching mechanism that holds the display closed is not working 

Note: As the display closes against the top case, a hook in the top of the display housing 
should be magnetically pulled down into a slot in the top case, and secured. When the 
latch button is pushed, the hook should release and retract into the display housing, 
allowing the display to open. 

1 . Verify hook operation by exercising the latch mechanism. 

2. If the hook does not operate properly, replace the display bezel. 

3. If the latch or latch button does not operate properly, replace the bottom case 
assembly. 

Fan fails 

1 . Check fan cable connection, and check cable for damage. 

2. Replace fan. 

3. Replace logic board. 



Symptom Charts PowerBook G4 (12-inch 1 .33 GHz) Troubleshooting 



Trackpad works intermittently 

The trackpad operation can be affected by hand lotion, humidity, dangling jewelry, and the 
use of more than one finger on the trackpad. 

1 . Check for environmental factors such as humidity, hand lotion, or jewelry. 

2. Clean the trackpad with a clean, dry lint-free cloth. 

Related articles: 

17228: Portables: Jumpy or Erratic Trackpad Operation 
58389: PowerBook and iBook: Trackpad Does Not Respond 



16 ■ PowerBook G4 (12-inch 1 .33 GHz) Trouble- Symptom Charts 



Block Diagram: PowerBook G4 (12-inch 1.33 GHz) 



256 MB SDRAM 
DDR on-board 



PowerPC G4 

microprocessor 

(L2 cache: 51 2K 1:1) 



167 MHz 
Memory bus 



167 MHz 
MaxBus 



Flat-panel 
display 



up to 1.25 GB 
DDR SDRAM 



Hard disk 
drive 



Ultra 
ATA bus 



Optical drive 



EIDE 
bus 



PMU99 
power controller 



Trackpad — ' 



Keyboard 



Power supply 
and charger 



Bluetooth 



12 Mbps 
USB 



AGP4X 
bus 



NVIDIA 
GeForce FX 

Go5200 
graphics IC 



Intrepid 
memory 

controller 
and I/O 
device 

controller 




Mini-DVI 
connector 



(EE) FireWire 400 port 



(Ijj Ethernet port 



Audio line in 

Audio line out 

Internal 
microphone 

Built-in 
speakers 

Mid-range 
enhance 



] USB 2.0 port 
] USB 2.0 port 



Data pump 
andDAA HO Modem port 



Modem module 



Symptom Charts 



PowerBook G4 (12-inch 1 .33 GHz) Troubleshooting 



I Service Source 




Views 



PowerBook G4 (12-inch 1.33 GHz) 



2004 Apple Computer, Inc. All rights reserved. 



Main Exploded View 



Bracket, Hard Drive 
922-5736 

Holder, Hard Drive, Left 
922-5737 

Hard Drive 
60 GB 661 -3247 
80 GB 661-3243 

Cushion, Hard Drive 
922-5739 

Flex Cable, Hard Drive 
922-5740 

Shield, Battery Connector - 
922-6416 

DC-to-DC Board 
922-6422 

Guide Rail, AirPort 
922-5744 

Internal Frame 
922-6385 



I/O Shield, Top 
922-6078 

I/O Shield, Port Side 
922-6080 



RJ11 Modem Board and Cable 
922-6381 



RJ11 Shield 
922-6417 

EMI Shield, DC-ln 
922-5728 

Sleeve, DC Port, Pkg. of 5 
922-5743 

DC-ln Board 
922-5655 



Sleep LED Board 
922-5659 

SDRAM Card 

256 MB 661-3323 

512 MB 661-3324 

1 GB 661-3325 

RAM Door 
922-6415 




Holder, Hard Drive, Right 
922-5738 





Keyboard Kit 
076-0982 



Top Case 
922-6380 

Hall Effect Sensor 
Board with Cable 
922-6483 
922-6239 

Optical Drive Bracket, Top 
922-6414 

Flex Cable, Optical Drive 
922-6240 

Optical Drive 
Combo 661-3255 
SuperDrive 661-3253 

Bezel, 

Optical Drive 
922-5819 



Optical Drive 
Bracket, Bottom 
922-6244 

Fan with Cable 
922-6242 

Modem Shield 
922-6384 

Soft Modem Card 
922-6492 

Heatsink 
922-6383 

Logic Board 
661 -3232 

Bluetooth Cable 
922-6494 

Bluetooth Board 

922-6571 

922-5764 (Q6T) 

Rear Panel with Speakers 

922-6387 

Subwoofer 
922-6412 

Bottom Case 
922-6386 

Battery Retention Bar 
922-6573 

Battery, 46W 
661-3233 



PowerBook G4 (12-inch 1 .33 GHz) Views - 1 



Display Exploded View 



Antenna Cable Assembly 
922-6074 




Left Clutch Cap 
922-5716 

Right Clutch Cap 
922-5717 



Rear Display Housing 
922-6243 



LCD Panel 
661-2791 




LVDS Cable 
922-5720 



Inverter Board 
922-6421 



Left Hinge 
922-5712 
922-5714 (SS) 

Right Hinge 
922-5711 
922-5713 (SS) 



Front Display Bezel 
922-6077 



Clutch Cover 
922-5715 



2 - PowerBook G4 (12-inch 1 .33 GHz) Views